Revert back 5.0 changes to Visual Studio .Net project files


VC++Files/client/mysqlclient.vcproj:
  Revert back 5.0 changes to Visual Studio .Net project files
VC++Files/libmysql/libmysql.vcproj:
  Revert back 5.0 changes to Visual Studio .Net project files
VC++Files/libmysqld/libmysqld.vcproj:
  Revert back 5.0 changes to Visual Studio .Net project files
VC++Files/mysql.sln:
  Revert back 5.0 changes to Visual Studio .Net project files
VC++Files/mysys/mysys.vcproj:
  Revert back 5.0 changes to Visual Studio .Net project files
VC++Files/sql/mysqld.vcproj:
  Revert back 5.0 changes to Visual Studio .Net project files
VC++Files/strings/strings.vcproj:
  Revert back 5.0 changes to Visual Studio .Net project files